Home / 100,072.62-138,117.15-57,623.34

Finding the Fourth Proportional to 100,072.62, 138,117.15 and 57,623.34

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Solution

The fourth proportional to 100,072.62, 138,117.15 and 57,623.34 is: 79,529.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,072.62 : 138,117.15 = 57,623.34 : x
  2. Step 2: Convert to fraction form
    100,072.62/138,117.15 = 57,623.34/x
  3. Step 3: Cross multiply
    100,072.62x = 138,117.15 × 57,623.34
  4. Step 4: Simplify right side
    100,072.62x = 7,958,771,494.28
  5. Step 5: Solve for x
    x = 7,958,771,494.28/100,072.62
  6. Step 6: Final answer
    x = 79,529.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.